The effectiveness of pre-sowing seed treatment in the fight against diseases of grain sorghum

Abstract. The aim of this work is to investigate the composition pathogenic mycoflora on seeds grain sorghum in Samara region and study effectiveness dressing agents against pathogens laboratory conditions. Research methodology methods. research was carried out basis innovative technologies breeding, seed production science Volga NIISS, a branch SamSC RAS. objects were two varieties Ros’ Kinel’skoe 63. Determination population by organisms method wet chamber with their preliminary placement corrugated filter paper boxes natural ventilation using technique according GOST 12044-93 subsequent microscopy. To effect plant protection chemicals, treated moisture (at rate 10 l/tons) preparations contact-systemic action Celeste Maks Vitaros; contact – TMTD Maksim; systemic - Armor. Untreated used as control. repetition fourfold. Results. Correct diagnosis knowledge causes onset disease, peculiarities development particular pathogen will be for successful implementation protective preventive measures. Phytopathological examination seeds, us 2019–2020, shows that most common fungi found are Cladosporium sp., Trichothecium roseum, Mucor Penicillium sp. It has been established varying efficiency from 75.8 97.6 % reduce contamination material. Scientific novelty. A phytopathological assessment relation conditions effective pre-sowing treatment determined damage plants diseases.